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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-06-20 21:31:15 -0500
committerMartin Roth <martinroth@google.com>2015-11-12 21:23:03 +0100
commit398540f568e24090f2e47aff90776c80c79f858b (patch)
tree110bcb88d4c15b8fbebffeb95f9184bee44cd5de /src/southbridge/amd/sb700
parent795ee1a6cd45b9f8a791d4624eadb1b73414cede (diff)
downloadcoreboot-398540f568e24090f2e47aff90776c80c79f858b.tar.xz
southbridge/amd/sb700: Do drive detection even in AHCI mode
SeaBIOS AHCI drive detection randomly fails for drives present on the secondary channel of each AHCI SATA BAR. Forcing native drive detection in AHCI mode resolves this issue. Change-Id: I34eb1d5d3f2f8aefb749a4eeb911c1373d184938 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: http://review.coreboot.org/11997 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/southbridge/amd/sb700')
-rw-r--r--src/southbridge/amd/sb700/sata.c99
1 files changed, 53 insertions, 46 deletions
diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c
index c61fa01953..ae4444600b 100644
--- a/src/southbridge/amd/sb700/sata.c
+++ b/src/southbridge/amd/sb700/sata.c
@@ -297,65 +297,72 @@ static void sata_init(struct device *dev)
if (port_count > max_port_count)
port_count = max_port_count;
- if (!sata_ahci_mode) {
- /* RPR7.7 SATA drive detection. */
- /* Use BAR5+0x128,BAR0 for Primary Slave */
- /* Use BAR5+0x1A8,BAR0 for Primary Slave */
- /* Use BAR5+0x228,BAR2 for Secondary Master */
- /* Use BAR5+0x2A8,BAR2 for Secondary Slave */
- /* Use BAR5+0x328,PATA_BAR0/2 for Primary/Secondary Master emulation */
- /* Use BAR5+0x3A8,PATA_BAR0/2 for Primary/Secondary Slave emulation */
- for (i = 0; i < port_count; i++) {
+ /* RPR7.7 SATA drive detection. */
+ /* Use BAR5+0x128,BAR0 for Primary Slave */
+ /* Use BAR5+0x1A8,BAR0 for Primary Slave */
+ /* Use BAR5+0x228,BAR2 for Secondary Master */
+ /* Use BAR5+0x2A8,BAR2 for Secondary Slave */
+ /* Use BAR5+0x328,PATA_BAR0/2 for Primary/Secondary Master emulation */
+ /* Use BAR5+0x3A8,PATA_BAR0/2 for Primary/Secondary Slave emulation */
+ for (i = 0; i < port_count; i++) {
+ byte = read8(sata_bar5 + 0x128 + 0x80 * i);
+ printk(BIOS_SPEW, "SATA port %i status = %x\n", i, byte);
+ byte &= 0xF;
+ if (byte == 0x1) {
+ /* If the drive status is 0x1 then we see it but we aren't talking to it. */
+ /* Try to do something about it. */
+ printk(BIOS_SPEW, "SATA device detected but not talking. Trying lower speed.\n");
+
+ /* Read in Port-N Serial ATA Control Register */
+ byte = read8(sata_bar5 + 0x12C + 0x80 * i);
+
+ /* Set Reset Bit and 1.5g bit */
+ byte |= 0x11;
+ write8((sata_bar5 + 0x12C + 0x80 * i), byte);
+
+ /* Wait 1ms */
+ mdelay(1);
+
+ /* Clear Reset Bit */
+ byte &= ~0x01;
+ write8((sata_bar5 + 0x12C + 0x80 * i), byte);
+
+ /* Wait 1ms */
+ mdelay(1);
+
+ /* Reread status */
byte = read8(sata_bar5 + 0x128 + 0x80 * i);
printk(BIOS_SPEW, "SATA port %i status = %x\n", i, byte);
byte &= 0xF;
- if (byte == 0x1) {
- /* If the drive status is 0x1 then we see it but we aren't talking to it. */
- /* Try to do something about it. */
- printk(BIOS_SPEW, "SATA device detected but not talking. Trying lower speed.\n");
-
- /* Read in Port-N Serial ATA Control Register */
- byte = read8(sata_bar5 + 0x12C + 0x80 * i);
-
- /* Set Reset Bit and 1.5g bit */
- byte |= 0x11;
- write8((sata_bar5 + 0x12C + 0x80 * i), byte);
-
- /* Wait 1ms */
- mdelay(1);
-
- /* Clear Reset Bit */
- byte &= ~0x01;
- write8((sata_bar5 + 0x12C + 0x80 * i), byte);
-
- /* Wait 1ms */
- mdelay(1);
+ }
- /* Reread status */
- byte = read8(sata_bar5 + 0x128 + 0x80 * i);
- printk(BIOS_SPEW, "SATA port %i status = %x\n", i, byte);
- byte &= 0xF;
+ if (byte == 0x3) {
+ for (j = 0; j < 10; j++) {
+ if (i < 4)
+ current_bar = ((i / 2) == 0) ? sata_bar0 : sata_bar2;
+ else
+ current_bar = ide_bar0;
+ if (!sata_drive_detect(i, current_bar))
+ break;
}
-
- if (byte == 0x3) {
- for (j = 0; j < 10; j++) {
- if (i < 4)
- current_bar = ((i / 2) == 0) ? sata_bar0 : sata_bar2;
- else
- current_bar = ide_bar0;
- if (!sata_drive_detect(i, current_bar))
- break;
- }
+ if (sata_ahci_mode)
+ printk(BIOS_DEBUG, "AHCI device %d is %sready after %i tries\n",
+ i,
+ (j == 10) ? "not " : "",
+ (j == 10) ? j : j + 1);
+ else
printk(BIOS_DEBUG, "%s %s device is %sready after %i tries\n",
(i / 2) ? "Secondary" : "Primary",
(i % 2 ) ? "Slave" : "Master",
(j == 10) ? "not " : "",
(j == 10) ? j : j + 1);
- } else {
+ } else {
+ if (sata_ahci_mode)
+ printk(BIOS_DEBUG, "No AHCI SATA drive on Slot%i\n", i);
+ else
printk(BIOS_DEBUG, "No %s %s SATA drive on Slot%i\n",
(i / 2) ? "Secondary" : "Primary",
(i % 2 ) ? "Slave" : "Master", i);
- }
}
}